Mechanical Performance Analysis of Design Scheme for High-speed Train Obstacle Deflector with Built-in Aluminum Honeycomb Covered Energy Absorber
Journal Title: Urban Mass Transit - Year 2025, Vol 28, Issue 2
Abstract
［Objective］ The OD (obstacle deflector) serves as a primary passive safety device on high-speed trains, effectively clearing obstacles between the wheels and the tracks. However, conventional OD designs do not meet the energy absorption requirements under the newly-added intermediate position overloading conditions specified in the EN 15227:2020 standard. Therefore, it is necessary to optimize the energy absorption design of high-speed train OD. ［Method］ The existing OD design is optimized, and a new design incorporating a built-in aluminum honeycomb covered energy absorber is proposed. A 3D model of the high-speed train OD with the built-in energy absorber is created, and the LS-DYNA software is used for computational analysis of the OD compression process, obtaining a simulated buffer force-displacement curve of the pilot. A quasi-static compression test is conducted on the OD using a 500-ton press machine, and the experimental buffer force-displacement curve of the OD is obtained. The simulated and experimental curves are compared to verify the reliability of the simulation results. ［Result & Conclusion］ Both the simulation and experimental results meet the requirements of EN 15227:2020, and the simulated curve shows high consistency with the experimental curve, confirming the feasibility of applying the established 3D OD model and simulation calculations results for guiding design proposals. During both the simulated and experimental compression processes, the optimized OD demonstrates stable compression performance, with a stable and controllable buffer force-displacement curve.
Authors and Affiliations
Hongshuang LI, He LI, Peng XU, Haomiao ZHANG, Zhengcheng QIU
Keywords
Related Articles
- EP ID EP759808
- DOI 10.16037/j.1007-869x.2025.02.011
- Views 47
- Downloads 0
Selection of Visual Rail Train Trajectory Following Points Based on Minimum Passing Width on Circular Curves
[Objective] The impact of selecting trajectory following points for a type of three-module visual rail train on vehicle road passing width is studied, providing theoretical basis for the choice of trajectory control poin...
Optimization of Interface Content between Shanghai Rail Transit Audio Video Unified Information Service System and Signaling System
Objective To improve the real-time, accuracy, and efficiency of information services, and enhance the operational service efficiency and quality of Shanghai rail transit, it is essential to optimize the interface content...
Cybersecurity Situational Awareness System Applicable for Urban Rail Transit CBTC System
Objective Urban rail transit CBTC (communication-based train control) systems face complex and diverse cybersecurity challenges. Existing cybersecurity tools feature high false alarm rates and poor adaptation to CBTC sys...
Prediction Model of Metro Traction Power Consumption Based on Grey Neural Network
Objective In order to improve train operational efficiency, it is necessary to monitor metro traction power consumption and establish a relevant energy consumption model for prediction analysis of metro traction power co...
Expansion and Renovation Plan for Urban Rail Transit Video Surveillance System Based on Cloud Storage Technology
[Objective] In response to issues in existing urban rail transit video surveillance systems—such as insufficient continuity assurance for video recording, data security risks, limited storage capacity scalability, and co...